re PR rtl-optimization/57100 (ICE: in pre_and_rev_post_order_compute, at cfganal.c:869 with -fdump-rtl-pro_and_epilogue-graph)

2013-10-30  Richard Biener  <rguenther@suse.de>

	PR middle-end/57100
	* basic-block.h (pre_and_rev_post_order_compute_fn): New function.
	* cfganal.c (pre_and_rev_post_order_compute_fn): New function
	as worker for ...
	(pre_and_rev_post_order_compute): ... which now wraps it.
	* graph.c (draw_cfg_nodes_no_loops): Use
	pre_and_rev_post_order_compute_fn to avoid ICEing and dependence
	on cfun.

From-SVN: r204211